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(11) | EP 2 114 006 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Position sensorless control of permanent magnet motor |
(57) Systems and methods of controlling a permanent magnet motor without a mechanical
position sensor are provided. In accordance with one embodiment, a motor control system
includes an inverter configured to receive direct current (DC) power and output a
power waveform to a permanent magnet motor, driver circuitry configured to receive
control signals and drive the inverter based upon the control signals, a current sensor
configured to determine a sampled current value associated with the power waveform,
and control circuitry configured to generate the control signals based at least in
part upon a comparison of a flux-producing component of the sampled current value
and a flux-producing component of a command reference current value.
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